My son is 12 and is transitioning from pi/python to nano/c++ for a few projects he’s working on. Today my secretarial role brings me to query you concerning an odd (for us) phenomena: you half insert the fan and it works. You completely insert it and it fails.
The connector on the motherboard looks all good: no bent pin everything looks straight.
You can see the connector here: https://imgur.com/a/h7y8ayX
Thank you for sharing your thoughts.
PS: I myself have some programming experience and am learning with him. :)